Need help to make my AYHJA T-bird fly higher!!

[Newbie77]

Hi guys. I am in need of your expert opinions again. I currently have an AYHJA "Y" 1.33ghz T-bird running stable at 1.5ghz on my KK266-R. The following are my system specs :-

AYHJA "Y" T-bird 1.33ghz @ 1.5ghz (1.94V)
I-Will KK266-R
Globalwin WBK38 (36C idle, 48-50C full load)
256mb Kingmax PC150 ram
Enlight 300w PSU
Elsa Gladiac GTS Pro 32mb
Seagate Barracuda 20gb HD
52x CD Rom
2 80mm case fans

I am hoping to push my T-bird to the 1.6ghz mark. Where do you guys think is the bottleneck in my system? I am guessing it's the PSU since at speeds higher than 1.5ghz, the voltage provided by the 5V rail fluctuates a lot (sometimes reaching as long as 4.78V) when I am running stability tests. However, I have had people telling me that I have probably reached the maximum capibility of my cpu so there's no point forking out extra moolah for a new 400w psu. What do you guys think? As you can see, I am not running many peripherals. Just a very basic system.

Any form of feedback or advice would be much appreciated. Thanks.

 

[mc130fox]

Here might be some help for your tweaking, and it relates to your PSU:

PSU Tweak GOODNESS

Might even save $400!

Good Luck!

Mark

 

[Newbie77]

Hey.. thanks Mark for directing me to the thread.. Interesting read.

However, I think that may not be the answer to my problem. You see, at 1.33ghz, my psu runs great, providing 4.94-5.03V on my 5V rail at 1.84 core voltage. Only when I crank up my cpu speeds to >1.56ghz and my core voltage switched to 1.94V do the voltages start to falter. Actually, falter is not the accurate word to use. My 5V voltages were fluctuating wildly at 1.56ghz (4.78V-5.23V) as compared to before. This leads me to come to one conclusion.

Since Watts = Voltage x Ampere, when I overclock, the watts requirement will go up and the ampere in turn, rises to the need, the voltage will start to sag if the ampere generated by the PSU is insufficient. However, the power requirement is not always constant, making the voltage fluctuate. In my case, becoz I upped the core voltage, the sagging and "bouncing back" of the voltage were made more pronounced. I think a higher watt PSU would be able to better maintain the voltage at a required level (less fluctuation) because the max ampere it can churned out is greater.

Anyway, this is just my theory. For all I know, this may be all crap. Any input would be much appreciated.

 

[mc130fox]

Hey Newbie,

I have used a PSU from PC Power and Cooling for ALL of my overclocking experiences. Never had a problem with my 425 ATX. Check out the specs.

I would think that +5v@50A on the 450 ATX maybe the way to go for you, and it's cheaper than the 425 ATX right now, with 10 more amps on +5V and 3 more amps on the +12V outputs, with a regulation of +/- 1% on these.

You know, I bought a fancy-shmancy MachV from FalconNW, and it only comes with a 300W PSU...its gotta go!

Mark

 

[Newbie77]

Hey, thanks for the tip. However, I am still unsure whether it's my psu which is holding back my cpu. If only I had a 400w psu to try out for a couple of days. :frown:

Hey fellas, any other feedback? Come on, I really need your input.

 

[NascarFool]

Holy S#!* ! 1.94v ! ! My 1.33 bird is running at 1.50GHz @ 1.750v. I must have a good one. It is on an Asus A7A266 mobo.

 

[elektronic]

?? 1.75v? I thought stock was 1.8v????

 

[Wind]

<< ?? 1.75v? I thought stock was 1.8v???? >>



Nope. Default for t-bird is at 1.75v.

Newbie77,

Seems tht ur PSU is holding u back. Fluctuating 5v line means ur PSU lack the quality power. Need a better PSU to clock higher.